When you're stocking a drawer for fasteners, springs, and industrial hardware, the choice often comes down to two very different kits: a Grade 8 hex cap flange bolt and locking flange nut set, or a stainless steel compression spring assortment. The bolt kit is built for bolted assemblies; the spring kit is built for small, spring-loaded repairs. Deciding between them means knowing which kind of job will land on your bench first.
Quick Verdict
For structural fastening jobs-flange bolts, frame bolts, matching locknuts-the Grade 8 Hex Cap Flange Bolt Zinc Yellow & Locking Flange Nuts Kit gives you a complete assortment in one compartment box. For small repairs and prototype work, the compression spring assortment kit keeps several spring sizes on hand. At $139.99 vs $11.93, they sit at different price points.
Comparison Table
| Grade 8 Hex Cap Flange Bolt Zinc Yellow & Locking Flange Nuts Kit - 447 Pc | 300 Pcs Compression Springs Assortment Kit, Stainless Steel Springs, Mini Spring | |
|---|---|---|
| Price | USD 139.99 | USD 11.93 |
| Contents | 447 flange bolts and locking flange nuts | 300 springs in 30 sizes, 10 per size |
| Sizes | 1/4-20 to 1/2-13 bolts and nuts | Mini compression springs with 0.011 to 0.027 inch wire |
| Material / Finish | Steel with zinc yellow trivalent finish | Stainless steel |
| Best for | Bolted frame, flange, and general assembly | Small spring repairs and replacements |
Where Each Product Wins
The bolt and nut kit wins when your job needs pieces to be clamped or bolted together. The kit covers common inch thread sizes with matching locking flange nuts, and the compartment box keeps everything sorted. The zinc yellow trivalent finish on steel is the finish offered here.
The spring assortment wins when you repair small mechanisms-latches, catches, switches, or anything that needs a little push. The kit gives you a range of compression spring sizes, and the stainless steel material in a silver finish is ready for general shop and home repairs.
Product Notes
Grade 8 Hex Cap Flange Bolt Zinc Yellow & Locking Flange Nuts Kit - 447 Pc
Fast Flange Fasteners packages this set in a compartment box with a powder-coated steel body and a zinc yellow trivalent finish on the fasteners. Inside are flange bolts in common inch thread sizes-1/4-20, 5/16-18, 3/8-16, and 1/2-13-with lengths from 1/2 inch up to 2 inches. Matching Grade 8 flange locknuts are included in the same kit, so you don't have to hunt for the right nut. It's a complete solution when you need to bolt something together and want the matching fastener in the same drawer. The limitation is that it only addresses threaded fastening-there are no springs in the box-and it's a bigger commitment than a grab-and-go repair assortment.
300 Pcs Compression Springs Assortment Kit, Stainless Steel Springs, Mini Spring
The Ninoge spring assortment adds a range of compression springs to your bench. It includes a variety of sizes with small wire diameters from 0.011 inch to 0.027 inch and lengths from about 0.39 inch to 1.19 inch. That's a practical spread for small repairs where a spring needs to fit a tight space. The stainless steel material and silver finish are the details to note. What it doesn't do is replace structural fasteners: there are no bolts or nuts here, and the small spring dimensions mean the kit is best for small repairs, not frame or flange assembly. It's easy to have as a backup.
Final Choice by Use Case
- Choose the Grade 8 flange bolt and lock nut kit if you're doing bolted assemblies, frame work, or flange repairs and want matching locknuts in a compartment box.
- Choose the compression spring assortment kit if you're handling small mechanisms and want a variety of stainless steel springs on hand.
The right pick depends on whether you need to fasten or to spring-load.
